Fix sparse checkout and error handling

spacy/cli/_util.py

@@ -300,7 +300,9 @@ def ensure_pathy(path):
     return Pathy(path)
 
 
-def git_sparse_checkout(repo: str, subpath: str, dest: Path, *, branch: str = "master"):
+def git_checkout(
+    repo: str, subpath: str, dest: Path, *, branch: str = "master", sparse: bool = False
+):
     git_version = get_git_version()
     if dest.exists():
         msg.fail("Destination of checkout must not exist", exits=1)
@@ -323,11 +325,14 @@ def git_sparse_checkout(repo: str, subpath: str, dest: Path, *, branch: str = "m
     # We're using Git and sparse checkout to only clone the files we need
     with make_tempdir() as tmp_dir:
         supports_sparse = git_version >= (2, 22)
+        use_sparse = supports_sparse and sparse
         # This is the "clone, but don't download anything" part.
         cmd = f"git clone {repo} {tmp_dir} --no-checkout --depth 1 " f"-b {branch} "
-        if supports_sparse:
+        if use_sparse:
             cmd += f"--filter=blob:none"  # <-- The key bit
-        else:
+        # Only show warnings if the user explicitly wants sparse checkout but
+        # the Git version doesn't support it
+        elif sparse:
             err_old = (
                 f"You're running an old version of Git (v{git_version[0]}.{git_version[1]}) "
                 f"that doesn't fully support sparse checkout yet."
@@ -342,19 +347,19 @@ def git_sparse_checkout(repo: str, subpath: str, dest: Path, *, branch: str = "m
         try_run_command(cmd)
         # Now we need to find the missing filenames for the subpath we want.
         # Looking for this 'rev-list' command in the git --help? Hah.
-        cmd = f"git -C {tmp_dir} rev-list --objects --all {'--missing=print ' if supports_sparse else ''} -- {subpath}"
+        cmd = f"git -C {tmp_dir} rev-list --objects --all {'--missing=print ' if use_sparse else ''} -- {subpath}"
         ret = try_run_command(cmd)
         git_repo = _from_http_to_git(repo)
         # Now pass those missings into another bit of git internals
         missings = " ".join([x[1:] for x in ret.stdout.split() if x.startswith("?")])
-        if supports_sparse and not missings:
+        if use_sparse and not missings:
             err = (
                 f"Could not find any relevant files for '{subpath}'. "
                 f"Did you specify a correct and complete path within repo '{repo}' "
                 f"and branch {branch}?"
             )
             msg.fail(err, exits=1)
-        if supports_sparse:
+        if use_sparse:
             cmd = f"git -C {tmp_dir} fetch-pack {git_repo} {missings}"
             try_run_command(cmd)
         # And finally, we can checkout our subpath

spacy/cli/project/assets.py

@@ -6,14 +6,15 @@ import shutil
 import requests
 
 from ...util import ensure_path, working_dir
-from .._util import project_cli, Arg, PROJECT_FILE, load_project_config, get_checksum
-from .._util import download_file, git_sparse_checkout, get_git_version
+from .._util import project_cli, Arg, Opt, PROJECT_FILE, load_project_config
+from .._util import get_checksum, download_file, git_checkout, get_git_version
 
 
 @project_cli.command("assets")
 def project_assets_cli(
     # fmt: off
     project_dir: Path = Arg(Path.cwd(), help="Path to cloned project. Defaults to current working directory.", exists=True, file_okay=False),
+    sparse_checkout: bool = Opt(False, "--sparse", "-S", help="Use sparse checkout for assets provided via Git, to only check out and clone the files needed. Requires Git v22.2+.")
     # fmt: on
 ):
     """Fetch project assets like datasets and pretrained weights. Assets are
@@ -23,10 +24,10 @@ def project_assets_cli(
 
     DOCS: https://nightly.spacy.io/api/cli#project-assets
     """
-    project_assets(project_dir)
+    project_assets(project_dir, sparse_checkout=sparse_checkout)
 
 
-def project_assets(project_dir: Path) -> None:
+def project_assets(project_dir: Path, *, sparse_checkout: bool = False) -> None:
     """Fetch assets for a project using DVC if possible.
 
     project_dir (Path): Path to project directory.
@@ -58,11 +59,12 @@ def project_assets(project_dir: Path) -> None:
                         shutil.rmtree(dest)
                     else:
                         dest.unlink()
-            git_sparse_checkout(
+            git_checkout(
                 asset["git"]["repo"],
                 asset["git"]["path"],
                 dest,
                 branch=asset["git"].get("branch"),
+                sparse=sparse_checkout,
             )
         else:
             url = asset.get("url")

spacy/cli/project/clone.py

@@ -7,7 +7,7 @@ import re
 from ... import about
 from ...util import ensure_path
 from .._util import project_cli, Arg, Opt, COMMAND, PROJECT_FILE
-from .._util import git_sparse_checkout, get_git_version
+from .._util import git_checkout, get_git_version
 
 
 @project_cli.command("clone")
@@ -16,7 +16,8 @@ def project_clone_cli(
     name: str = Arg(..., help="The name of the template to clone"),
     dest: Optional[Path] = Arg(None, help="Where to clone the project. Defaults to current working directory", exists=False),
     repo: str = Opt(about.__projects__, "--repo", "-r", help="The repository to clone from"),
-    branch: str = Opt(about.__projects_branch__, "--branch", "-b", help="The branch to clone from")
+    branch: str = Opt(about.__projects_branch__, "--branch", "-b", help="The branch to clone from"),
+    sparse_checkout: bool = Opt(False, "--sparse", "-S", help="Use sparse Git checkout to only check out and clone the files needed. Requires Git v22.2+.")
     # fmt: on
 ):
     """Clone a project template from a repository. Calls into "git" and will
@@ -28,7 +29,7 @@ def project_clone_cli(
     """
     if dest is None:
         dest = Path.cwd() / Path(name).parts[-1]
-    project_clone(name, dest, repo=repo, branch=branch)
+    project_clone(name, dest, repo=repo, branch=branch, sparse_checkout=sparse_checkout)
 
 
 def project_clone(
@@ -37,6 +38,7 @@ def project_clone(
     *,
     repo: str = about.__projects__,
     branch: str = about.__projects_branch__,
+    sparse_checkout: bool = False,
 ) -> None:
     """Clone a project template from a repository.
 
@@ -50,7 +52,7 @@ def project_clone(
     project_dir = dest.resolve()
     repo_name = re.sub(r"(http(s?)):\/\/github.com/", "", repo)
     try:
-        git_sparse_checkout(repo, name, dest, branch=branch)
+        git_checkout(repo, name, dest, branch=branch, sparse=sparse_checkout)
     except subprocess.CalledProcessError:
         err = f"Could not clone '{name}' from repo '{repo_name}'"
         msg.fail(err, exits=1)

spacy/util.py

@@ -680,7 +680,10 @@ def run_command(
             Errors.E970.format(str_command=" ".join(command), tool=command[0])
         ) from None
     except subprocess.CalledProcessError as e:
-        # We don't want a duplicate traceback here
+        # We don't want a duplicate traceback here so we're making sure the
+        # CalledProcessError isn't re-raised. We also print both the string
+        # message and the stderr, in case the error only has one of them.
+        print(e.stderr)
         print(e)
         sys.exit(1)
     if ret.returncode != 0: